Being untruthful gets position of responsibility (3,4)

I believe the answer is:

hot seat

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'position of responsibility' is the definition.
(I've seen this before)

I don't understand the rest of the clue.

(Other definitions for hot seat that I've seen before include "new constituency" , "Uncomfortable or tricky situation (informal)" , "from which bottom quick to rise?" , "punishment?" , "Position carrying full responsibility" .)

I've seen this clue in The Irish Times.

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